This is a true story.As a kid growing up in a rough-and-tumble neighborhood in New York City, Joe Moglia dreamed of someday becoming the head coach of a college football team-not of becoming a corporate titan.But sometimes, life gets in the way of our dreams. By the time Joe was in his early 30s, he had risen through the high school and college football ranks to become the defensive coordinator at Dartmouth. His dream was very much within reach. Problem was, Joe wasn't making enough money to support his growing family. Faced with the hard choice between chasing his lifelong dream and supporting his wife and four young kids, Joe did the honorable thing: He walked away from football and went to Wall Street to try to find a job that would foot the bills at home.Joe had no training in finance. He had no MBA. His resume reflected his coaching accomplishments and his teaching jobs. And yet, somehow, through grit and determination, he was able to land an entry-level...